Zero Backlash Speed Reducers

PRECISE • True Zero Backlash • 400% Shock Load Capacity • Exceptional Torsional Stiffness • Rigid Bearing Construction • Smooth, Quiet Operation INTELLIGENT • Unique Cam Design Allows for More Than 50 Standard Ratios • Same Low Profile Design Regardless of Ratio • Integral Output Bearing DYNAMIC • Balanced Cam for Higher Speeds • Low Inertia • High Safety Factor • Input Speeds to 6000 rpm • Great for High Reversing Applications PRECISE, INTELLIGENT, DYNAMIC Today's servo motors continue to provide higher speeds and increased torque capacity in each frame size. Dynamic performance, backlash and...

Dojen™ Reducers Ultimate Performance In applications that demand the greatest positioning accuracy, highest torsional stiffness, and lowest backlash, Onvio's Dojen™, with its compact axial design, is the only choice. Choose from the following options Nine Frame Sizes • Diameters from 4 inches up to 19 inches • Output Torques from 100 Lb-in to over 100,000 Lb-in • Input speeds to 8,000 RPM Widest Ratio Range Available • 49 Ratios Available • 9:1 up to 256:1 • Stacking stages not required Modularity • Add Onvio’s Right angle reducer for applications where axial space is crucial • Add a planetary...

Zero Backlash Zero Backlash Speed Reducers Ultimate Performance Onvio reducers are designed with cantilevered needle bearing cam followers and rollers—not with All steel construction for operation in wide range of temperatures. pins and bushings found in other cycloidal designs. This allows for a controlled pre-load between the cam and cam followers, assuring zero backlash. Pre-load is maintained throughout the design life of the reducer. One-piece dual reduction cam provides a wide range of ratios in a compact, low profile design. Every cam follower is in contact at all times, the load is equally...

Integral four point contact ball bearing offers precision and high capacity. Output flange design allows for direct connection to load, simplifying machine designs. Full compliment needle bearing provides high capacity and assures zero backlash. Improved spring loaded lip seal provides better sealing and can be operated in washdown. Zero Backlash Speed Reducer w w w. o n v i o l l c . c o m ONVIO • Zero Backlash Speed Reducers 4

Overall Dimensions Base (Housing) Installation 'Pilot diameter tolerance +.000 - .002 2Pilot diameter tolerance +.002 - .000 Note: All dimensions subject to change. Please call for specification control drawing. 5 ONVIO • Zero Backlash Speed Reducers

Performance Specifications Size 1 Additional ratios available. See ratio table for a complete list. 2 Continuous torque based on an L10 bearing life of 1 million revolutions of the output shaft. 3 Max. output speeds are based on intermittent duty. Actual speeds will vary depending on bearing loads.. Ratios: Onvio's cycloidal reducer offers the most ratios with the widest range available. The unique cam design allows all ratios to be achieved without stacking stages, so the reducer's package size never changes. The - and + indicators that precede the reduction indicate the rotation of the output...

Special features of the high torque M-24 • 3 times the power in the same diameter • Full complement output bearing • Higher ratios—up to 256:1 • Higher input speeds—up to 4500 rpm • Greater positioning accuracy (±330 arc seconds) • Thru-hole capability Overall Dimensions 'Pilot diameter tolerance +.000 - .002 2Pilot diameter tolerance +.002 - .000 Note: All dimensions subject to change. Please call for specification control drawing. 7 ONVIO • Zero Backlash Speed Reducers

Performance Ratings Performance Specifications Model No. 1 Additional ratios available. See ratio table for a complete list. 2 Continuous torque based on an L10 bearing life of 1 million revolutions of the output shaft. 3 Max. output speeds are based on intermittent duty. Actual speeds will vary depending on bearing loads. Additional Ratios Available Ratios: Onvio's cycloidal reducer offers the most ratios with the widest range available. The unique cam design allows all ratios to be achieved without stacking stages, so the reducer's package size never changes. The - and + indicators that precede...

Tare Torque: Tare torque is the friction from the preload, bearings, grease, etc. The tare torque is the amount of torque it takes to continuously operate the reducer at 1,500 RPM input speed. If the motor bearing can not support the reflected radial load, Onvio offers an added support bearing and male input shaft. Please refer to page 10 for standard dimensions. Contact Onvio application engineering for additional ratios or for assistance. Additional SpecificationInput Torque Variables Motor Bearing Dynamic Radial Loads Onvio's unique collet input shaft gives designers the shortest axial package...

Grease Chart 1 May require derating the reducer. Contact our application department for details. Onvio also offers specialty lubrication for use is semiconductor applications, food processing, etc. Contact our application department for details. Lubrication The Dojen is grease lubricated and sealed for life. However, in some high cycle applications or in environments that can prematurely cause lubricant to breakdown, we recommend purging old grease with fresh new grease. The reducer is equipped with grease ports on the outer diameter. Contact Onvio customer service for lubrication procedures...

Collet Input Shaft Features • Perfect for direct mounting in close quarters to a servo motor. • No keyways, no backlash. • Specify motor shaft diameter when ordering. • Motor sleeves provided for any motor shaft diameter smaller than the maximum shaft diameter. • Eliminates costly couplings. Straight Input Shaft Features • Has fully supported input shaft. • Removes radial load from motor bearings. Collet Input (For direct coupling of motor shaft) • Ideal for shaft-to-shaft couplings, pulleys, gears, etc. • Allows reducer to be used as a speed increaser in specified ratios. • Both metric and inch...